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iSpring WGB21B 2-Stage Water Filter

In the third position, we have the iSpring WGB21B and this is another effective solution for dealing with home water contamination. Like the Aquasana EQ-1000, this water filter model from iSpring utilizes more than one water filter to tackle a wide range of common water problems.

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The unit has a very capable 2 stage system that offers a strong and effective filtration. In the first stage, the system filters out all the contaminants that are larger than 5 microns. Dirt, sediments and all other large-sized particles are completely removed from the water.

The system achieves its maximum filtration in the second stage where using the carbon block filter, the water is further filtered out to remove finer sediments, rust, pesticides, herbicides, other contaminants, and even chlorine.
The system may not be as effective as the three-stage system of the Aquasana EQ-1000 above in eliminating chlorine and killing some microorganisms, but you can remove up to 95% of water contaminants with it compared to other normal filters.

Even much better, it uses 1-inch input and output ports that allow as much as 15 gallons of water per minute to pass through the system. You won’t notice any drop in water pressure once you install it.

However, it doesn’t soften the water which means expect stains and salt build-ups in your utensils and internal pipes respectively. You can solve this though by installing a water softener first, then the filter system. You will achieve the best possible results.


  • The filtration system is quite effective
  • Offers slightly better water pressure than other high-end models
  • Requires minimum maintenance as the filters last up to one year
  • Installation is fairly easy if you are a hands-on person
  • The filters comply with the NSF standards


  • Does not soften the water
  • Need to use Teflon tape or else the connection might leak

Our Verdict

The iSpring WGB21B provides enough water pressure that’s ideal for larger household and on top of that, the filter system is quite effective and easy to maintain. It’s a perfect choice especially if you already have a water softener installed.

Price & Rating

4.6* out of 5*

The iSpring WGB21B 2-Stage Water Filter has an average user rating of 4.6* out of 5*. It is reviewed by 250 verified purchase customers at the price of 165.99$.

ProductiSpring WGB21B 2-Stage Water Filter
Rating4.6 out of 5 stars
Recommended price(Check the latest price at Amazon.com)

Product Specification

Stages2 Stages
Filters1st Stage: 5-micron polypropylene sediment filter (FP15B)
2nd Stage: CTO filter(FC15B)
Flow rate15 GPM
Capacity50,000 gallons
PressureMin: N/A
Max: N/A
Dimensions10 x 12 x 26 inches
Weight15 pounds

Images Gallery

iSpring WGB21B 2-Stage Water Filter Reviews
iSpring WGB21B 2-Stage Water Filter Reinforced construction
iSpring WGB21B 2-Stage Water Filter 2 stags
iSpring WGB21B 2-Stage Water Filter usage
iSpring WGB21B 2-Stage Water Filter Filter replacement guide

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